Free SawStop Brake

[Mike Henderson]

I was cutting a small piece of wood and before I knew it the blade was below the table and I had a small cut on my thumb.
SawStop1.jpg

Don't even know exactly how everything happened. While the piece was small, I'd made the same cut many times before.

Anyway, just a nick, bit of blood and a ruined Infinity blade. I hear that SawStop will give you a replacement brake if you send them the old one.

Mike

[Interesting set of thoughts went through my head. First, was "What happened?" Then, when I realized my thumb was cut, it was "Oh, XXXX", but really thankful I didn't cut my thumb off. Finally, feeling stupid for setting off the brake. Really glad I had the SawStop.]

[Getting the blade and the brake out was a challenge.]

[glenn bradley]

Glad you weren't hurt Mike. I have used the blade wrench as a sort of pickle fork to gingerly persuade the blade and cartridge to wriggle off the arbor.

[Jim Riseborough]

What happened to the teeth just after where it was activated?

[eugene thomas]

I think you saw stop is paid for now.....

[chase standifer]

EDITED: I didnt zoom in on the picture and notice that the blade was already removed and the teeth completely gone. I just lost the carbide on mine.

[mreza Salav]

It is interesting that not just the carbide but the teeth are completely gone.
Were you using the guard and the splitter? Do you have the photo of the piece you were cutting?

[Larry Frank]

Sorry about the loss of the blade...Very glad you were not hurt

[Mike Henderson]

What happened to the teeth just after where it was activated?

Looks to me like the teeth in that part of the blade were just ripped off by the brake. It's possible the brake "bounced" before grabbing the teeth. I haven't found the carbide teeth anywhere. Yes, I did have eye protection on.
SawStop4.jpg

I think your saw stop is paid for now.....

Yeah, that's my reaction, also. I had a visit to the ER long ago just for stitches and it was $1,000.

EDITED: I didn't zoom in on the picture and notice that the blade was already removed and the teeth completely gone. I just lost the carbide on mine.

That blank portion of the blade is ahead of where the blade is buried in the brake. I don't know why it skipped like that. That blade is not going to be able to be repaired.

It is interesting that not just the carbide but the teeth are completely gone.
Were you using the guard and the splitter? Do you have the photo of the piece you were cutting?

I was using the riving knife. Here's a picture of the piece I was cutting. It's a shop made dovetail marker. One side was too wide and I was trimming it off.
SawStop2.jpg

Here's how I was holding it to push it through the saw.
SawStop3.jpg

I must have twisted the piece at the back of the blade and it got picked up by the rear teeth.

And here's my thumb. Not too bad. I had a band-aid on it and took the picture when putting on a new band-aid.
SawStop5.jpg

Would have been bad on a non-SawStop saw.

Mike

[One interesting thing is that SawStop must have made some software changes in the brake. You know how it used to take a long time to get ready after you turned on the switch? With the new brake, it comes ready almost immediately.]

[Joe Kaufman]

Looks to me like the teeth in that part of the blade were just ripped off by the brake. It's possible the brake "bounced" before grabbing the teeth. I haven't found the carbide teeth anywhere. Yes, I did have eye protection on.
SawStop4.jpg

Saw Stop mentions (p.29) that Blades with depth-limiting shoulders may take longer to stop and you could receive a more serious injury and recommends using blades without depth-limiting shoulders.

I have a few new combo blades with this feature and have considered not using them for this reason. The manufacturers of blades with depth limiting shoulders advertise them as a safety feature and anti-kickback features. So, you need to use a less intrinsically safe blade to be more safe......

[Andrew Hughes]

Darn Mike that must been very scary.Glad you didn't get hurt.
I got a great Vhs video you can watch while you recover.

[Mike Henderson]

[QUOTE=Joe Kaufman;2569928]

Looks to me like the teeth in that part of the blade were just ripped off by the brake. It's possible the brake "bounced" before grabbing the teeth. I haven't found the carbide teeth anywhere. Yes, I did have eye protection on.
SawStop4.jpg

Saw Stop mentions (p.29) that Blades with depth-limiting shoulders may take longer to stop and you could receive a more serious injury and recommends using blades without depth-limiting shoulders.

I have a few new combo blades with this feature and have considered not using them for this reason. The manufacturers of blades with depth limiting shoulders advertise them as a safety feature and anti-kickback features. So, you need to use a less intrinsically safe blade to be more safe......

Pardon my ignorance, but what are "depth limiting shoulders"? I went to the manual and found the statement but no picture of what they are.

Is it something to do with the depth of the gullets? In other words, what is a "shoulder" on a saw blade?

Mike

[Alan Schwabacher]

[QUOTE=Mike Henderson;2570024]

what are "depth limiting shoulders"?

If you go back to page 1 and look at the photo, you'll notice that every 5th tooth has a bump behind it. That's the depth limiting shoulder. The idea is that if you try to cut too fast, that will hit the work and prevent cutting too deeply. Usually this is good, but with a Sawstop it can prevent the aluminum block engaging the teeth completely as quickly, slowing down the blade stopping mechanism. Though apparently it still works pretty well.

[mreza Salav]

I had not noticed that warning about blades with anti-kick back shoulders (my rip blades along with another combo blade have them).
It makes sense that they slow down the work of brake but from your experience seems the brake still does its job.

[Mike Henderson]

[QUOTE=Alan Schwabacher;2570029]

If you go back to page 1 and look at the photo, you'll notice that every 5th tooth has a bump behind it. That's the depth limiting shoulder. The idea is that if you try to cut too fast, that will hit the work and prevent cutting too deeply. Usually this is good, but with a Sawstop it can prevent the aluminum block engaging the teeth completely as quickly, slowing down the blade stopping mechanism. Though apparently it still works pretty well.

Ah, okay. I see it now. Thanks.

Mike

[David Helm]

I looked at the cut and immediately said to myself, "why not use the bandsaw for that one?"